Belt-fastening device



Oct. 9 1923. v

` l. M. JACOBS ET AL BELT FAsTENiNG DEV-ICE Filed Feb. 23

E. @IEIEIEIIIEIEIEIEI MMC/PANN? i Arm/PNE Ys Patented @et 9, 1923.

lAeZd PATENT ISIDOR IVI. JACOBS AND WILLIAM GRANIER, OF ST. LOUIS, MISSOURI, ASSIGNORS TO TRUCK TRACTOR & MANUFACTURING COMPANY,

POI'ATION OF MISSOURI.

OF ST. LOUIS, MISSOURLTA CORn v BELT-FASTENING DEVICE.

Application filed February 23, 1923.

u To all whom t may concern:

. ends of said belts together, and particularly to a device of the type mentioned `which is provided with a cutting device for trimming the end portions of the belts to be acted on.

Prior to this invention belt fastening de* vices of the type mentioned above have been provided with cutting devices, but due to certain deiiciencies therein said cutting devices have not always functioned in an entirely successful manner. For the ends of a i power transmission belt to be connected together in a manner to provide a very secure joint, it is necessary that the meeting faces of the end portions of said belt be cut at right angles relative to the top and bottom faces of said belt, but in the use of the cutting devices heretofore used this was not always possible, due to. the fact that it was possible for the belt to move slightly during the cutting operation whereby the end portions of .said belt were' provided with meeting faces which were not cut at the proper angles.y

The belt fastening device disclosed in the present application is provided with a cutting device which is so arranged that the i belt will be prevented from moving with relation to the knife blade during the cutting operation whereby the objections recited above are eliminated.

With the foregoing and other objects in view, the invention comprises the novel construction, combination and arrangement of parts hereinafter more specifically described and illustrated in the accompanying drawings wherein is shown the preferred embodiment of the invention. However, it is to 'be understood that the invention comprehends Serial No. 620,854.

changes, variations and modifications `which come within the scope of the claims hereunto appended.

Fig. I is a perspective view of our improved belt fastening device showing the cutting device associated therewith.

lF ig. II is a longitudinal sect-ion through the fastening device shown in Fig. I.

Fig. nr is a .Section on une iii-in of Fi .I.

ig. IV is lan enlarged fragmentary vsec-` tion showing the cutting mechanism of our improved belt fastening device.

In the drawing, A. designates our improved belt fastening device which comprises an anvil B, staple-holding mechanism C and a hammer D. The anvil B is preferably formed of comparatively heavy metal and is provided witha plurality of'reinforcing ribs B which are intended to add durability to said anvil. The anvil B is pro-V vided at one of its ends ywith a head portion E Mounted on the anvil B immediately above thev head lportion E is the staple holding mechanism C, said mechanism comprising a plate 1 which is secured to the anvil B preferably'by means of rivets 2. The plate l, as shown in Fig. I, extends approximately the full width of the anvil B and said plate is provided with a plurality of slots 3 formed along the front edge of` said plate. Formed through each `of the' tooth-like portions 4: off the plate l is an opening, all of said openings being in alinement so that an opening is formed which extendsfrom end to end of said slotted portion of said plate l. Extended through the openings referred to above is an elongated pin 5, said pin being 'preferably provided with a loop at one of its anvil- B of my improved belt fastening device, there being a rod 8 which extends laterally through the head portion E of the anvil B and projects fromeach side face of said head portion which projecting. portions of said rod pass, through openings in (Fig. IV). The vertical leg of the L-shaped member 9 is spaced apart from the side face of anvil B. Pivotally mounted on the rod 8 is a knifevblade 11, said knife blade being arranged to operate in the space between` a side face of the anvil B and the inside face of the vertical leg of the L-shaped fmember i 9. The space within which the knife blade 1l operates is of such width that rsaid knife blade lits tightly between the adjacent faces of the anvil and the vertical leg of the member 9, hence, due to the friction exerted against the knife blade, said knife blade will remain in any position in which it is placed.`

The operation of our improved belt fastening device is asrfollows: V

Assuming that it is desired to secure the ends of a power transmission belt together, it is first necessary yto trim the end portions of said belt so that the'fmeeting edges thereof will be provided with faces which are cut at right angles toftop and bottom faces of said belt, and also that said meeting edges are cut at right angles to the side edges of said belt. The anvil B, as will be noted by referring Fig, l, is provided withv an upstanding flange 12 at each 0f its side edges, and an upstanding abutment 13 at its front end, said abutment 13 being higher" than the flanges 12. It willl also bekr observed by referring to the same view that the anvil B is providedwith an intermediate rib 111- which is of thel same height as the flanges 12. ln use, the belt to betrimmed is placed laterally ofthe anvil B so'that the portion t0 be eut fromsaid belt. extends beyond the cutting edge of the' knife blade.: 11, and so that a side edge of said belt rests` against the inside face of the upstanding abutment 13 in which position said belt will be supported bythe flanges l2 and rib 14,

so that it may not sag. The fact that a side edge of the belt is contacting with the abut ment 13 will insure a eut edge which is at a right angle to the side edges of the belt.v lV hen the belt has been arranged in the position described the knife blade 11 is' struck a hammer blow, and said blade is driven through the belt to sever saine. lt will be noted kby reference Vto Fig. lV

`that the belt extends across the space within which the knife blade 11 operates and that said belt is supported on either sidel of said space by one of the flanges 12 and by the vertical leg of the L-shaped member 9, hence when the knife blade 11 moves through said belt there will be no opportrinity for said belt to move relative to said knife, whereby a vertical cut is made in said belt which is a true right angle to the top and bottom faces of said belt. It is, of course, apparent that the flange 12 is provided with a cutting edge 15 which coopcrates with the cutting edge of the knife blade 11 to sever the belt.

After the belt has been trimmed inthe manner described the elongated pin 5 is withdrawn from the openings through which it extends, and a sta-ple 5 is inserted into each of the slots in plate 1 or into as many of said slotsas is necessary, depending on the width of the belt to be acted on. The elongated pin is then again inserted through th@ `openings in amanner to lock said staples in said slots (Fig. Il). An end of the belt is then inserted between the sharpened ends of the staples S in the manner illustrated in Fig. Il, when the ham-- mer kD is brought to a position where the head thereof rests on the upper legs of the row of staples, and said hammer is struck a blow which .will drive theendsof said staples into the belt and clinch same. After both ends of the belt have been provided with staples in the manner described, the stapl-es of the opposite ends of said belt are connected together in the well known manner.

W'hen the belt is placed, in position to be laced the abutment 13 will support said belt so that the end to be laced will drop onto the anvil in position to receive the staples.

We claim: y

A belt fastening device comprising an anvil., staple holding means, yupstanding marginal belt supporting members on said anvil, an intermediate belt supporting member disposed between said marginal belt supporting members, one ofv said marginal belt supporting members forming a shear for a 'belt supported by saidy supporting` members, a pivoted knife cooperating with the shear member, and an upstanding abutment at the outer edge of saidanvil adapted to support a belt so that the end of said belt will drop onto the anvil in position to receive the staples, and said abutment adapted to act as an aligning abutment dur ing the cutting operation.

ln testimony that we claim the foregoing we hereunto aflix our signatures.

ISIDOR M. JACOBS. WILLIAM GRANIER. 

